The Queen of Pop has not released an album since 2012's 'MDNA', but fans now believe she may could be hinting that new music is on the horizon.

Madonna

Madonna uploaded an image of the words 'Rebel Heart' to her Instagram page, prompting speculation this could be the title of a new song, especially considering she captioned the picture with what appear to be song lyrics.

One thing we do know is that she's recording new material, as she revealed earlier this month that she was in the studio with EDM chart-topper Avicii, whose single 'Wake Me Up' reached the number one spot in the UK in 2013.

Madonna's last album featured collaborations with both Nicki Minaj and M.I.A. - so the idea of either Miley or Macklemore cropping up on a new Madonna release wouldn't be completely out of the question.

Of course all of this is just speculation, so we must try not to get too excited.

*plans elaborate Madonna-themed party just in case...*

Madonna's Wildest Moments

Madonna's Wildest Moments

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30. A simple declaration "to rule the world"

Jan. 14, 1984
We first met Madonna in 1982, but it was by 1984 that she was a household name. When Dick Clark called her over following her "American Bandstand" performance that same year, the host asked her what her dreams are, to which she responded, "To rule the world." There's proof dreams do true.